Backfire - MBWorld.org Forums

May 2, 2011 | 05:24 PM

CJackson13

Thread Starter

Senior Member

Joined: Mar 2011

Posts: 267

Likes: 2

From: Arizona

W208 CLK55

Backfire

Upon driving my car(01 430) the other day, I decided to gun it after a light. I mean come on, what else are you supposed to do when driving a merc? Anyway, as i let off the gas I experienced a backfire followed momentarily with flames... I'd just like to know if this has happened to anyone else and if so, what the problem was. Do you think it could be the cat or just timing?

May 2, 2011 | 06:33 PM

insame1

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Joined: Feb 2011

Posts: 2,562

Likes: 197

From: Austin, TX

2006 E55, 2012 GLK350 & 1992 190e sportline

how did you see the flames? sounds like you are running way too rich.

May 2, 2011 | 08:40 PM

CJackson13

Thread Starter

Senior Member

Joined: Mar 2011

Posts: 267

Likes: 2

From: Arizona

W208 CLK55

Yeah i should probably clear that up, my following friend saw the flame, not me.

So basically theres too much fuel,(i.e running rich) but shouldn't the cat burn that off?

May 3, 2011 | 01:15 AM

MarcusF

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Joined: Apr 2005

Posts: 3,784

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From: SCV SoCal

2002 CLK430

Gasoline requires oxygen to burn. It sounds like you're running rich and the fuel wouldn't ignite until heated gasoline vapors were in the air, which is about 20% oxygen.